Animal shears



Nav. 11 1924.

H. 'KOCOUREK ANIMAL SHEARS Filed Hay 14 Y, JNVENTOR 5/iff Zcoure: W wwwIIS ATTORNEY/' Patented Nov. il, i924-,

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HENRY KOCOUREK, OF CHICAGO, ELLNOIS,

SSG'NOR. BY BIRECT AND MESNE AS- SIGNMENTS, TO CHICAGO' FLEKXBLE SHAFTCOB'EANY, OF CHICAGO, ILLI'NOIS, A

CORPORATION OF ILLNOIS. y

ANIRAL SHEARS.

Application filed May 14, 1920.- Serial No. 381,335.

To all whom t may concern.' f

Be it known that I, HENRY KoooUnnK, a citizen of the United States, anda resident of the city of Chicago, in the county of 5 Cook and the Stateof Illinois, have invented certain new and useful Improvements in AnimalShears, of which the following is a specification, reference being hadto the accompanying drawings, forming a part thereof.

This invention relates to animal shears and consists of means designedto insure more accurate alignment of the comb and cutter than has beenpossible in previous constructions. These improvements 'comprise thefeatures of invention described and shown in the drawing as indicated inthe claim:

In the drawings:

Figure l is a plan view of a clipper head embodying this invention withparts broken away to disclose certain features of construction. y

Figure 2 is a side view thereof.

Figure 3 is a section at the line, 3-3, on Figure 2.

Figure 4t is an inverted plan view of a comb element.

Figure 5 is an inverted plan view of the frame member with other partsremoved.

Figure 6 is a diagrammatic view on an enlarged scale of the two cuttingelements,

The type of clipper with which this invention is concerned consists of aframe member, l, provided with means for mounting a comb, 2, relativelystationary therewith, and a cutter, 3, mounted for oscillation,interposed between the frame and the comb. A cross-head, 4, attached to,or integral with the cutter is provided thereon for engaging the crankroller, 5, for imparting the necessary motion thereto, causing thecutter to travel over the comb, with which itcontacts.

A. spring tensioned holt` 6, acts to hold the shearing elements, 2 and3, together, and also against the boss, 7, and the guide ribs, 8, 8, onthe frame, 1.

The structure thus far described is of familiar type and it will henoticed that the shearing elements are held in position relative to eachother by means of the guide ribs, 8, 8, engaging the cutter, 3, in agroove, 3a, therein, while the lugs, 9, 9, position the comb, 2. Bot-hpositioning devices, 8, 8, and

9, 9, are'integral with the frame, l, and the shearing elements depend,for their proper action upon the accuracy with which these devices arelocated with respect to each other.

ln the more common type of clipper, the comb, 2, is apertnred at l0, 10,for the reception of circular lugs and it has been found by experiencethat in machining lugs of that shape, even with the greatest of care,they are frequently found to be more or less out of alignment, with theresult that the teeth of the cutter, 3, at the limit of the workingstroke thereof in one direction or the other will not properly registerwith the teeth of the comb member, 2.

The diagram in Figure 6 shows in full lines the position of the teethwhen the positioning lugs are of circular form and by faulty manufacturehave been formed too far to one side: and the dotted lines in the samefigure indicate the result when the lugs are not in parallelism with theribs` 8. l'n either case, it is evident that in moving the implementforward, the sh arp angle formed between the cutter teeth and the combteeth which they fail to fully overlap at the end of their stroke wouldtend to pull the hair caught in the bight at the intersection of thecutting edges. and the hair `inst bevond them would not be cut at all.

To avoid these defects the lugs, 9, are made rectangular in crosssection as seen in plan, and disposed parallel to the ribs.l 8; theirrelative position and form is shown in Figure 5 ln machining the lugsand ribs a cutting or milling tool should be made of such form and shapewould face all of the surface on that side of the frame member in oneoperation, leaving upstanding and sharply defined the members, 7, 8 and9, which will of course insure their parallel ism.. If at the same timethe frame- 1, be mounted in a which carries it by engagement with thejournal bearing, 11, of the operating shaft, 12, the lugs, 9, will thushe automatically formed in correct relation to the shaft, both as totheir surfaces which eX,- tend parallel to the shaft axis and thosetransverse thereto.

rEhe apertures, 10, in the comb, 2, are shaped to receive therectangular lugs which are of less thickness than the ordinari,7circular ones, so that the comb, primarily intended for use ywithclipper-head frames having rectangular lugs, may alsoV be used withthose havin'gcircular "ones, if the apertures be provided as shown Withnotches in the forni of arcs cut out on each side to accommodate thesaid circular bosses. This eX- pedient is merely for the benefit ofusers having need of repair combs to fit old style frames.

In a clipper comprising a frame, in combination therewith areciprocating toothed cutter guided for rectilinear movement thereon; aiiXed comb with its teeth yieldingly held in Contact With the teeth ofthecutter,

said frame having aligned parallelOgrammatic guide ribs for the cutterand aligned parallelogrammatic positioning lugs for the comb formedintegrally with said frame and projecting from the bottom thereof, saidrib being parallel to said lugs; whereby said ribs and lugs may be facedor machined simultaneously by tooling means mounted in iiXedv relationto each other, thus insuring parallelism and invariable spacing.

Iny testimonyT Whereo't, I have hereunto set my hand at Chicago,Illinois, this 28th day of April, 1920.

HENRY KOCOUIl-EH.`

